29
Addition and Subtraction
We are learning to: Add numbers, without and with renaming, within 99. Subtract numbers, without and with renaming, within 99.
Day One Look at the example below.
Noah’s parents bought him a soccer game costing €49 and a soccer ball costing €25 for his birthday. How much did they spend in total?
Circle the numbers and keywords: €49, €25, how much in total
Top Tip!
Round the prices when estimating:
€49 rounds to €50. €25 rounds to €30. €50 + €30 = €80
Try these. 1
Link with operation needed (+ or −): Add (+). Use a strategy: Draw a picture.
Estimate and calculate: My estimate: close to €80
€4 9
+ €215 €7 4
Answer: €74
Summarise how you got your answer: I added €49 and €25 and got a total of €74.
Kayley had €63 in her savings account. The following week, she put €25 into her account. How much money was in her account then?
2 3
One day, a toyshop sold 28 scooters in the morning and 36 scooters in the afternoon. How many scooters were sold that day?
A carpenter had a shelf measuring 98 cm in length. He sawed off a 13 cm piece. What length was the shelf then?
120 Strand: Number Strand Unit: Operations − addition and subtraction
Answer: Marks:
/1
Answer:
Marks:
/1
Answer:
Marks: Today’s Marks:
/1 /3
Week 29
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